CN107638718B - A kind of high temperature resistant antifoaming agent and preparation method thereof - Google Patents
A kind of high temperature resistant antifoaming agent and preparation method thereof Download PDFInfo
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- CN107638718B CN107638718B CN201710802471.8A CN201710802471A CN107638718B CN 107638718 B CN107638718 B CN 107638718B CN 201710802471 A CN201710802471 A CN 201710802471A CN 107638718 B CN107638718 B CN 107638718B
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Abstract
The invention discloses a kind of high temperature resistant antifoaming agent, are prepared by following components in percentage by weight：Polysiloxanes silicone grease 8 45%；Ethoxylated acetylenic alcohols emulsifier 5 20%；Dispersant 0.2 5%；Thickener 1 6%；Water, surplus；The sum of weight percent of above-mentioned each component is 100%.The high temperature resistant antifoaming agent can keep original structure at high temperature, and performance is stablized, not floating oil, be not precipitated.The invention also discloses a kind of preparation methods of high temperature resistant antifoaming agent, and step is few, and flow is simple, and operating condition requires low, production efficiency height.
Description
Technical field
The present invention relates to antifoaming agent technical fields more particularly to a kind of high temperature resistant antifoaming agent and preparation method thereof.
Background technology
Antifoaming agent is mostly liquid compound product, is broadly divided into three classes：Organic silicon, polyethers, mineral oils.Organosilicon disappears
Infusion is the silicone grease synthesized as main component using polysiloxanes, is equipped with emulsifier, dispersant, thickener etc. with suitable quantity of water through machinery
It emulsifies.Organic silicon defoamer is to apply wide a kind of antifoaming agent at present.It is found in practical application, organic silicon defoamer
Have many advantages, such as that defoaming capacity is strong, the suds time is long.In many application fields, such as paper industry, textile and dyeing industry, oil field work
Industry etc., it is desirable that antifoaming agent has heat safe feature.
But existing organic silicon defoamer has the following defects：Organic silicon defoamer under the high temperature conditions easy floating oil, easily
It is precipitated, it is poorer than general polyether antifoam agent to stablize difference.
Invention content
For overcome the deficiencies in the prior art, one of the objects of the present invention is to provide a kind of high temperature resistant antifoaming agent, this disappears
Infusion can keep original structure at high temperature, and performance is stablized, not floating oil, be not precipitated.
The second object of the present invention is to provide a kind of preparation method of high temperature resistant antifoaming agent, and step is few, and flow is simple, behaviour
Make condition and requires low, production efficiency height.
An object of the present invention adopts the following technical scheme that realization：
A kind of high temperature resistant antifoaming agent, is prepared by following components in percentage by weight：Polysiloxanes silicone grease 8-
45%；Ethoxylated acetylenic alcohols emulsifier 5-20%；Dispersant 0.2-5%；Thickener 1-6%；Water, surplus；The weight of above-mentioned each component
It is 100% to measure the sum of percentage.
Further, it is prepared by following components in percentage by weight：Polysiloxanes silicone grease 10-30%；Second
Oxygroup alkynol emulsifier 8-15%；Dispersant 0.5-3%；Thickener 2-4%；Water, surplus；The weight percent of above-mentioned each component
The sum of be 100%.
Further, the molecular structure of the ethoxylated acetylenic alcohols emulsifier is as shown in structural formula I：
Wherein, R1And R2It is alkyl；M=0-100, n=0-100.
Further, R1And R2It is one kind in methyl, ethyl, propyl and butyl.
Further, m=10-50, n=10-50.
Further, the polysiloxanes silicone grease be selected from Ai Ken companies of Norway SILCOLAPSE 801U1,
SILCOLAPSE 825 or SILCOLAPSE C 583.
Further, the dispersant be selected from the Silwet DA-33 of Mai Tu new materials company of the U.S., Silwet DA-63,
Silwet DA-40, Silwet SPM-2, Silwet SPM-1 or Silwet SPM-3.
Further, the thickener is cellulose thickener or polyacrylate-type thickeners.
The second object of the present invention adopts the following technical scheme that realization：
A kind of preparation method of high temperature resistant antifoaming agent, is prepared according to the following steps：By the polysiloxanes silicon of formula ratio
In fat, ethoxylated acetylenic alcohols emulsifier, dispersant, thickener and water input emulsification pot, emulsification obtains the high temperature resistant antifoaming agent.
Further, the polysiloxanes silicone grease of formula ratio, ethoxylated acetylenic alcohols emulsifier, dispersant, thickener and water are thrown
Enter to emulsify in pot, stirring and emulsifying, setting mixing speed is 800-1200r/min, stirs 0.5-1h, obtains the high temperature resistant defoaming
Agent.
Compared with prior art, the beneficial effects of the present invention are：
(1) high temperature resistant antifoaming agent provided by the present invention passes through polysiloxanes silicone grease and ethoxylated acetylenic alcohols emulsifier (high temperature
Emulsifier) improve the high-temperature stability of lotion, polysiloxanes silicone grease improves the compatibility of product；Selected high temperature simultaneously
Emulsifier is Gemini structure, and the isomerization of hydrophobic end makes it enhance the wrapping property of oil phase, and the Gemini structure of water-wet side carries
The compatibility of emulsifier and water phase is risen.It is set to maintain original emulsifying power at high temperature in addition, the high cloud point of emulsifier has
Power.Therefore, under the high temperature conditions, defoaming agent emulsion of the invention can keep original structure, and performance is stablized, not floating oil, no
It is precipitated, solves the problems, such as lotion poor high temperature stability.
(2) preparation method of high temperature resistant antifoaming agent provided by the present invention, step is few, and flow is simple, operating condition requirement
Low, production efficiency is high.
Description of the drawings
Result figure of the high temperature resistant antifoaming agent that Fig. 1 is provided by the embodiment of the present invention 1 in stability test I；
Result figure of the antifoaming agent that Fig. 2 is provided for comparative example 1 of the present invention in stability test I.
Specific implementation mode
In the following, in conjunction with specific implementation mode, the present invention is described further, it should be noted that is do not collided
Under the premise of, new embodiment can be formed between various embodiments described below or between each technical characteristic in any combination.
A kind of high temperature resistant antifoaming agent, is prepared by following components in percentage by weight：Polysiloxanes silicone grease 8-
45%；Ethoxylated acetylenic alcohols emulsifier 5-20%；Dispersant 0.2-5%；Thickener 1-6%；Water, surplus；The weight of above-mentioned each component
It is 100% to measure the sum of percentage.
As preferred embodiment, it is prepared by following components in percentage by weight：Polysiloxanes silicone grease
10-30%；Ethoxylated acetylenic alcohols emulsifier 8-15%；Dispersant 0.5-3%；Thickener 2-4%；Water, surplus；Above-mentioned each component
The sum of weight percent is 100%.
As preferred embodiment, ethoxylated acetylenic alcohols emulsifier can be obtained by commercially available channel, such as selected from the U.S.
The SURFYNOL 44X series of air chemical company, the molecular structure of ethoxylated acetylenic alcohols emulsifier is as shown in structural formula I：
Wherein, R1And R2It is alkyl；M=0-100, n=0-100.
As preferred embodiment, R1And R2It is short hydrocarbon, is more preferably in methyl, ethyl, propyl and butyl
One kind；M=10-50, n=10-50.
As preferred embodiment, polysiloxanes silicone grease be selected from Ai Ken companies of Norway SILCOLAPSE 801U1,
SILCOLAPSE 825 or SILCOLAPSE C 583, they are a kind of polyether-modified silicone grease.Choose above type of poly- silicon
Oxygen alkane silicone grease, dosage is few, and having them has the group of heat-resistant stable.
As preferred embodiment, dispersant is selected from Silwet DA-33, the Silwet of Mai Tu new materials company of the U.S.
DA-63, Silwet DA-40, Silwet SPM-2, Silwet SPM-1 or Silwet SPM-3.The dispersant of these types point
The ability of dissipating is strong, and additive amount is few, can promote the antifoam performance of product.
As preferred embodiment, thickener is cellulose thickener or polyacrylate-type thickeners.Choose with
Upper two kinds of thickener, dosage is few, can solve the puzzlement of creaming of emulsion, improves stability of emulsion.
The high temperature resistant antifoaming agent that the embodiment of the present invention is provided passes through polysiloxanes silicone grease (polyether-modified silicone grease) and ethoxy
Base alkynol emulsifier (high temperature emulsifier) improves the high-temperature stability of lotion, and polyether-modified silicone grease improves the compatible of product
Property；Selected high temperature emulsifier is Gemini structure simultaneously, and the isomerization of hydrophobic end makes it enhance the wrapping property of oil phase, parent
The Gemini structure of water end (W.E.) improves the compatibility of emulsifier and water phase.In addition, the high cloud point of emulsifier, which has, makes it at high temperature
Maintain original emulsifying capacity.Therefore, under the high temperature conditions, defoaming agent emulsion of the invention can keep original structure,
Performance stablize, not floating oil, be not precipitated, solve the problems, such as lotion poor high temperature stability.
The high temperature resistant antifoaming agent that the embodiment of the present invention is provided is especially suitable for pulp industries.In addition, provided by the present invention
High temperature resistant antifoaming agent, high temperature resistant refers mainly to heat resisting temperature at 70 DEG C or more, that is to say, that antifoaming agent of the invention at 70 DEG C and
Can be used normally in above environment, not oil slick, be not precipitated, performance stablize.
A kind of preparation method of high temperature resistant antifoaming agent by the polysiloxanes silicone grease of formula ratio, ethoxylated acetylenic alcohols emulsifier, is divided
In powder, thickener and water input emulsification pot, machinery emulsification, setting mixing speed is 800-1200r/min, stirs 0.5-1h,
Obtain high temperature resistant antifoaming agent.
The preparation method for the high temperature resistant antifoaming agent that the embodiment of the present invention is provided, step is few, and flow is simple, and operating condition is wanted
Ask low, production efficiency is high.
It is specific embodiment of the present invention below, used raw material, equipment etc. remove special limit in the following embodiments
It can be obtained by buying pattern outside fixed.
Embodiment 1
A kind of high temperature resistant antifoaming agent, is prepared according to the following steps：10% ethoxylated acetylenic alcohols emulsifier, 19.2% are gathered
Siloxanes silicone grease, 0.8% dispersant, 2% thickener and surplus water input emulsification pot in, setting mixing speed is 1200r/
Min, machinery emulsification 1h obtain heat safe Polyether Modified Polysiloxanes Defoaming Agent.Wherein, the model of above-mentioned each component or molecule knot
Structure formula is as shown in table 1.
Embodiment 2
A kind of high temperature resistant antifoaming agent, is prepared according to the following steps：By 8% ethoxylated acetylenic alcohols emulsifier, 25% poly- silicon
Oxygen alkane silicone grease, 1% dispersant, 3% thickener and surplus water input emulsification pot in, setting mixing speed is 800r/min, machine
Tool emulsifies 1h, obtains heat safe Polyether Modified Polysiloxanes Defoaming Agent.Wherein, the model of above-mentioned each component or molecular structural formula be such as
Shown in table 1.
Embodiment 3
A kind of high temperature resistant antifoaming agent, is prepared according to the following steps：By 15% ethoxylated acetylenic alcohols emulsifier, 30% poly- silicon
Oxygen alkane silicone grease, 3% dispersant, 4% thickener and surplus water input emulsification pot in, setting mixing speed is 1000r/min, machine
Tool emulsifies 1h, obtains heat safe Polyether Modified Polysiloxanes Defoaming Agent.Wherein, the model of above-mentioned each component or molecular structural formula be such as
Shown in table 1.
Embodiment 4
A kind of high temperature resistant antifoaming agent, is prepared according to the following steps：By 5% ethoxylated acetylenic alcohols emulsifier, 40% poly- silicon
Oxygen alkane silicone grease, 3.5% dispersant, 1% thickener and surplus water input emulsification pot in, setting mixing speed is 900r/min,
Machinery emulsification 1h obtains heat safe Polyether Modified Polysiloxanes Defoaming Agent.Wherein, the model or molecular structural formula of above-mentioned each component
As shown in table 1.
Embodiment 5
A kind of high temperature resistant antifoaming agent, is prepared according to the following steps：By 12% ethoxylated acetylenic alcohols emulsifier, 22% poly- silicon
Oxygen alkane silicone grease, 2.5% dispersant, 2.5% thickener and surplus water input emulsification pot in, setting mixing speed is 1100r/
Min, machinery emulsification 1h obtain heat safe Polyether Modified Polysiloxanes Defoaming Agent.Wherein, the model of above-mentioned each component or molecule knot
Structure formula is as shown in table 1.
The composition information record sheet of the high temperature resistant antifoaming agent of 1 embodiment 1-5 of table
Comparative example 1
In 300ml stainless steel cups, according to mass percent meter, 18% commercially available polysiloxanes silicone grease is added
(SILCOLAPSE 825), 2% commercial emulsifier (Lutensol AO 3), 0.9% dispersant (Silwet SPM-1), 2%
Polyacrylate-type thickeners and excess water, temperature are controlled at 25-50 DEG C, and machinery emulsification 30min obtains organic silicon defoamer.
Comparative example 2
Comparative example 2 difference from example 1 is that, used emulsifier be commercial emulsifier (Lutensol AO
3), other identical as specific embodiment 1.
Effect assessment and performance detection
1, stability test I
Test method is as follows：
1) take a certain amount of paper pulp line black liquor, be heated to 80-90 DEG C it is spare；
2) antifoaming agent and paper pulp line black liquor volume ratio 1 are pressed:9 mixing, after being stirred evenly with glass, are put into 80 DEG C of water-baths
Middle heating 5min；
3) by above-mentioned mixed liquor magnetic stirrer 10min, rotating speed 500r/min, whether observation liquid level top has
Viscous grease object；
4) mixed liquor is poured on 50 mesh filter screens, and the filter screen with residue is put into 50 DEG C of baking ovens and dries 1h,
Compare the amount of precipitate.
After Fig. 1 and Fig. 2 is respectively precipitate drying of the antifoaming agent of embodiment 1 and comparative example 1 in paper pulp line black liquor
Residue figure can be obtained from Fig. 1-2, and the compatibility of the antifoaming agent and paper pulp line black liquor of embodiment 1 is good, be heated simultaneously after the two mixing
Stirring, precipitate is few, this illustrate embodiment 1 antifoaming agent performance stablize, not floating oil, be not precipitated, high-temperature stability is good.On the contrary
, there is a large amount of residue in the antifoaming agent of comparative example 1, illustrates that the antifoaming agent of comparative example 1 is compatible with paper pulp line black liquor
Property is poor, and non-refractory, high-temperature stability are poor.The test result of embodiment 2-5 is close with embodiment 1, no longer superfluous herein
It states；The test result of comparative example 2 is close with comparative example 1, and details are not described herein.
2, stability test II (grain size test)
Test method：Sample to be tested is diluted to suitable concentration, is slowly added to grain size tester, tester to be entered it is dense
Degree presses " measurement " key, you can detect the particle diameter distribution of each sample automatically close to 10 μm.
Test result is as follows shown in table 2.
The antifoaming agent grain size test result record sheet of table 2 embodiment 1-5 and comparative example 1-2
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Comparative example 1 | Comparative example 2 | |
| D90 | 10.01μm | 18.23μm | 13.51μm | 20.01μm | 12.02μm | 47.44μm | 51.21μm |
| D50 | 5.23μm | 8.01μm | 6.13μm | 9.55μm | 5.01μm | 13.93μm | 16.33μm |
| D90/D50 | 1.91 | 2.28 | 2.20 | 2.10 | 2.40 | 3.41 | 3.14 |
In table, D90Represent the equivalent diameter of maximum particle diameter when cumulative distribution is 90% in size distribution curve, D50It represents
The equivalent diameter of maximum particle diameter when cumulative distribution is 50% in size distribution curve.It can be obtained from the record result of table 2, embodiment
The D of 1-590/D50It is worth the D than comparative example 1-290/D50It is worth small, and D90/D50It is worth and smaller illustrates that antifoaming agent is more stable.As it can be seen that real
The antifoaming agent stability for applying a 1-5 is good, when in use substantially not floating oil, be not precipitated.
The above embodiment is only the preferred embodiment of the present invention, and the scope of protection of the present invention is not limited thereto,
The variation and replacement for any unsubstantiality that those skilled in the art is done on the basis of the present invention belong to institute of the present invention
Claimed range.
Claims (6)
1. a kind of high temperature resistant antifoaming agent, which is characterized in that be prepared by following components in percentage by weight：Poly- silica
Alkane silicone grease 8-45%；Ethoxylated acetylenic alcohols emulsifier 5-20%；Dispersant 0.2-5%；Thickener 1-6%；Water, surplus；It is above-mentioned each
The sum of weight percent of component is 100%；
The molecular structure of the ethoxylated acetylenic alcohols emulsifier is as shown in structural formula I：
Structural formula I
Wherein, R1And R2It is alkyl；M=10-50, n=10-50；
R1 and R2 is one kind in methyl, ethyl, propyl and butyl；
The polysiloxanes silicone grease be selected from Ai Ken companies of Norway 801 U1, SILCOLAPSE 825 of SILCOLAPSE or
SILCOLAPSE C 583。
2. high temperature resistant antifoaming agent as described in claim 1, which is characterized in that by following components system in percentage by weight
It is standby to form：Polysiloxanes silicone grease 10-30%；Ethoxylated acetylenic alcohols emulsifier 8-15%；Dispersant 0.5-3%；Thickener 2-4%；
Water, surplus；The sum of weight percent of above-mentioned each component is 100%.
3. high temperature resistant antifoaming agent as described in claim 1, which is characterized in that the dispersant is selected from the U.S. and steps figure new material public affairs
Silwet DA-33, Silwet DA-63, Silwet DA-40, Silwet SPM-2, the Silwet SPM-1 or Silwet of department
SPM-3。
4. high temperature resistant antifoaming agent as described in claim 1, which is characterized in that the thickener is cellulose thickener or gathers
Acrylic ester thickener.
5. a kind of preparation method of high temperature resistant antifoaming agent according to any one of claims 1-4, which is characterized in that according to following
Step is prepared：The polysiloxanes silicone grease of formula ratio, ethoxylated acetylenic alcohols emulsifier, dispersant, thickener and water are put into breast
Change in pot, emulsification obtains the high temperature resistant antifoaming agent.
6. the preparation method of high temperature resistant antifoaming agent as claimed in claim 5, which is characterized in that by the polysiloxanes silicon of formula ratio
In fat, ethoxylated acetylenic alcohols emulsifier, dispersant, thickener and water input emulsification pot, stirring and emulsifying, setting mixing speed is 800-
1200r/min stirs 0.5-1h, obtains the high temperature resistant antifoaming agent.
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| CN111569473A (en) * | 2020-05-28 | 2020-08-25 | 南京澳莉峰环保科技有限公司 | High-temperature-resistant organic silicon emulsion defoaming agent and synthetic method thereof |
| CN115138106B (en) * | 2022-08-03 | 2024-04-23 | 合肥新万成环保科技有限公司 | High-temperature general high-carbon alcohol defoamer for papermaking white water and preparation method thereof |
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| CN106267910A (en) * | 2016-08-10 | 2017-01-04 | 中国海洋石油总公司 | A kind of defoamer and its production and use |
| CN106731034A (en) * | 2016-12-22 | 2017-05-31 | 新疆水处理工程技术研究中心有限公司 | A kind of compound defoamer |
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